ウィンドウの中のラベルを表示させることができません

Question

java.fxを使ってウィンドウの中に、ラベルを上下に貼り付けたいのですが、setTopとsetBottomがエラーを起こしてしまいます。

package kadai;

import java.awt.Label;

import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;

public class a1 extends Application{
	private Label lb,at;
  private Button bt;
  public static void main(String[]args) {
	  launch(args);
  }
  public void start (Stage stage)throws Exception{
	  lb = new Label("カートに追加しますか？");
	  at = new Label("");
	  Button bt = new Button("はい");

	  BorderPane bp = new BorderPane();

	  bp.setBottom(at);
	  bp.setTop(lb);

	  bp.setCenter(bt);

	  Scene sc = new Scene(bp,300,200);

	sc.addEventHandler(MouseEvent.MOUSE_CLICKED,new a1EventHandler());

	  stage.setScene(sc);

	  stage.setTitle("課題３２");
	  stage.show();
  }

  class a1EventHandler implements
  EventHandler<MouseEvent>{
	  public void handle(MouseEvent e) {
            at.setText("商品ページに戻ります。");
	  }
  }
}

なお、エラーは次のようになります

Exception in Application start method
java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:389)
	at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:767)
Caused by: java.lang.RuntimeException: Exception in Application start method
	at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
	at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$154(LauncherImpl.java:182)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.Error: Unresolved compilation problems: 
	型 BorderPane のメソッド setBottom(Node) は引数 (Label) に適用できません
	型 BorderPane のメソッド setTop(Node) は引数 (Label) に適用できません

	at kadai.yasui.start(yasui.java:26)
	at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$161(LauncherImpl.java:863)
	at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$174(PlatformImpl.java:326)
	at com.sun.javafx.application.PlatformImpl.lambda$null$172(PlatformImpl.java:295)
	at java.security.AccessController.doPrivileged(Native Method)
	at com.sun.javafx.application.PlatformImpl.lambda$runLater$173(PlatformImpl.java:294)
	at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
	at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
	at com.sun.glass.ui.win.WinApplication.lambda$null$147(WinApplication.java:177)
	... 1 more
Exception running application kadai.a1

どうすれば、ラベルを上下に貼り付けることができますでしょうか？

Answer 1

//import java.awt.Label;
import javafx.scene.control.Label;

同名のクラスが多くて間違いやすいですね。

Comments

[nakagen]

そこでしたか･･･！盲点でした、本当にありがとうございます！